Seven years ago, programmer Chen Xuan lent money to his classmate He Yu and has endured years of ridicule from his family ever since. While changing his bank card, he discovers a mysterious set of coordinates hidden in the transfer note. Following the clues, he finds a computer left behind by He Yu, containing seven years' worth of evidence that tech company owner Lu Dongyao plagiarized an idea the two friends created in college and stole the private data of tens of millions of users to sell overseas. He Yu has already been murdered. With the help of the police and a lawyer, Chen Xuan brings Lu Dongyao to justice, relaunches the app the two friends created together, and establishes a foundation to protect the rights of original creators.